Testing and practical validation of an individual safety performance assessment methodology – the SSP System

Ana Rita Duarte Mira, Celeste Jacinto, Bruno Dias, Manuel Carrasqueira, Alda Fundo

Research output: Contribution to journalArticlepeer-review


The “Safety Score Permit” (SSP) is a new tool that focuses on behaviour
and is based on a point system which allows individual performance’s
tracking, thus encouraging safe actions. The present study aims at
verifying the applicability and practical validation of the first SSP version;
the ultimate goal is to evaluate its coverage within different industrial
contexts and identify limitations and opportunities for improvement. A pilot
implementation was conducted in three large companies, presented as
three case studies. The records of safety behaviour observations (SBO) of
each case were analysed to verify if all the “observed deviations” fitted into
the classes and subclasses typified in the system. Although the study basis
was the same in all three cases, in two of them the research was based on
existing SBO records collected in 2019, whilst in the 3rd case there was a
much higher interaction throughout the work. In this case, the process was
started from scratch, including the SBO procedure, its monitoring and
subsequent data analysis, to create the necessary conditions for the
implementation of the full system. The results obtained revealed that, in
general, the SSP platform has the ability to cover most deviations identified
in an organization. The system has the potential to become a useful and
transparent tool to monitor employees’ safety performance at all
hierarchical levels; it also helps to identify weaknesses in the companies’
OHS processes. This work was essentially exploratory but it shed light on
how to improve the system further and also unveiled new opportunities. A
key issue to enhance SSP as a management tool is to expand its scope to
all types of human errors, thus offering better support to strategic OHS
Original languageEnglish
Pages (from-to)36-48
JournalInternational Journal of Occupational and Environmental Safety (IJOES)
Issue number2
Publication statusPublished - 30 Nov 2021


  • Safety performance
  • Safety Score System


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